Md. Shah Alam
Senior Scientific Officer
Vertebrate Pest Division , BARI, Gazipur
A. T.M. Hasanuzzaman
Senior Scientific Officer
Vertebrate Pest Division , BARI, Gazipur
Abstract: The experiment was carried out at farmers field of Dinajpur and Rajshahi to study the effects of some bait additives (molasses, sugar, dry fish and powder milk) mixed with wheat flour to increase the consumption and efficacy of additives mixed poison bait In condition the higher population reduction (76-86%) was achieved from the bait T5 (dry fish + wheat flour + Zn3P2) followed by T2 (76-80%)(dry fish + powder milk + wheat flour + Zn3P2) and the lowest in T4 (30%)( powder milk + wheat flour + Zn3P2). The daily consumption/spot (g) was also higher in treatment T5 and the lowest in T4. All these additives mixed with zinc phosphide increase the consumption rate and the efficacy of bait.
Effect, additives, increase, acceptability, zinc phosphide bait, rodents
Rajbar, Dinajpur and Rajshahi
Pest Management
To investigate the palatability and consumption of additives mixed zinc phosphide bait and the efficacy of poison bait by adding different additives.
The experiments were carried out at farmer’s wheat fields in two different areas at Dinajpur and Rajshahi of Bangladesh. In all locations clear signs of rodent infestation were detected. Additive mix 2% zinc Phosphide (Zn3P2) was used for this experiment. For preparing 2% zinc phosphide bait with different additives, following combination of the ingredients were used such as powder milk (7.5%), Sugar (20%), molasses (20%), dry fish (10%), mixed with wheat flour. Another plain wheat grain mixed with zinc phosphide treated as standard poison bait
The treatments are as follows:
T1 = Molasses + dry fish + powder milk +wheat flour + Zn3P2
T2 = Dry fish + powder milk + wheat flour + Zn3P2
T3 = Molasses +dry fish + wheat flour + Zn3P2
T4 = Powder milk + wheat flour + Zn3P2
T5 =Dry fish + wheat flour + Zn3P2
T6 =Plain wheat + Zn3P2 (Standard poison bait)
Two methods were used to determine the populations density in each location mentioned above treatments. (1) The active burrow count method (2) the foot tracks activity (using tracking tile) method. Twenty active burrows/spots were used for each treatment. Before applying treatment all the active burrows were identified properly. Twenty tracking tiles (20 x 20cm) for foot tact activity were used for each treatment. Foot tracts activity were taken for two night for both pre and post treatment operation. The pre and post treatment rodent population was determined by using both of this method.10g of additives mixed zinc phosphide bait was placed near the burrow opening on a piece of paper. Bait was given in the evening and was collected in the next morning. Bait was placed for consecutive three days. Each treatment was replicated in three places in each location. Consumption was recorded everyday.
Annual Report-2007-2008 , BARI
Thirty thousand
The effectiveness of additives mixed zinc phosphide poison bait in field is presented in table 9 to 11. Table 9 revealed that the total consumption of additives mix poison bait differed significantly among the treatments. The highest poison bait consumption was recorded from the treatment T5 (144g and 182.7g)(Dry fish + wheat flour + Zn3P2) in both the location at Dinajpur and Rajshahi and the lowest consumption was recorded in T3 (50.91g)(molasses + powder milk + wheat flour + Zn3P2) at Dinajpur and T4 (48.69g)(Powder milk + wheat flour + Zn3P2) at Rajshahi. The daily consumption/spot (g) of additive mixed poison bait was followed the same trend as total consumption and significantly different among the treatments. The efficacy of different additives mixed with zinc phosphide poison bait is presented in table 10 and 11. The highest population reduction of rat was achieved from the treatment T5 (76-86%) and T2 (76-80%) where zinc phosphide was mixed with dry fish + wheat flour and dry fish + powder milk + wheat flour respectively in both the location. The lowest population reduction was observed in the treatment T4 (30%) where zinc phosphide mixed with powder milk and wheat flour in both the location. EI-Gawad and Ali (1982) enhanced the acceptance of crushed maize bait to rodent species by adding sucrose and molasses. Asran (1993) got similar result by adding sesame oil to crushed maize bait and El-Rahmen (1999) increase acceptability of zinc phosphide by adding powder milk, fishmeal and blood meal to crushed maize in house mouse, Mus musculus.
Report/Proceedings